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<br />Figure 2. Quarry :;::e and vegetatiuu type map. Altough the quarry
<br />was just getting started by June, 1972, the bench
<br />arrangement of the cuts is already evident.
<br />34- 32- 110(3), Item i. VEGETATION
<br />Quarry site includes four plant communities:
<br />1. Grassland community.
<br />2. Mountain -- mahogany community.
<br />3. Rocky Mountain redcedar community
<br />4. Ponderosa pine - Douglas fir community.
<br />Density: Thin on lower slopes, medium on upper. Produces 150 to
<br />200 pounds of forage per acre on lower slopes, about 800 pounds
<br />on upper.
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<br />PLAN
<br />SCENIC AND HISTORICAL
<br />PLAN
<br />SOILS AND SECTION LOCATIONS
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<br />25- C -5(c), Item 6. Unusual Scenic or Aesthetic Areas
<br />Some locations within the Mount Falcon Open Space from which parts
<br />of the quarry will be visible.
<br />Boundaries of Mt. Falcon Open Space ..e..e•�e� "ie�.�
<br />Planned trails — --' _ —•
<br />Places from which quarry may be seen
<br />25- C -5(b), Site Plan, Item 6.
<br />Documented Historical Sites: None on property. Falcon Castle
<br />Ruins, 1 mile west, will not be affected.
<br />Unusual Geologic Sites: None on property. Red Rocks Park, 2 miles
<br />north, will not be affected.
<br />Archeological Sites: None on property. Nearby LoDaisKa site was
<br />excavated in the 1950's.
<br />34- 32- 110(3) SOILS
<br />Soil A: Juget -Rock Outcrop Association. Shallow, less than 20
<br />inches deep. On moderate to steep slopes. Up to 30
<br />percent rock outcrop.
<br />Soil B: Cryoboralfs -Rock Outcrop Association. Ten to 60 plus
<br />inches deep. Moderate to steep slopes. About 20 percent
<br />rock outcrop.
<br />25- C -5(b), Item 8 SCREENING
<br />Topographic screening is being used for the quarry. Topographic
<br />screen of the quarry from Highway 8 is illustra.eld by the topo-
<br />graphic sections through E to E, H to 11, R to R, and T to T.
<br />Vegetation will be used to screen the roads (not illustrated).
<br />77 SCI
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<br />25- C -5(c)
<br />ENVIRONMENTAL IMPACT STUDY
<br />Environmental Factor
<br />Quarry Impacts
<br />Item (1)
<br />Water Supply
<br />No impacts. Water is being piped under the crusher area.
<br />(Leonard Rice Consulting Water Engineers, Inc.
<br />Report dated April, 1975.)
<br />Item (2)
<br />Water Quality
<br />Surface water gains unimportant addition of dissolved
<br />minerals from operation, sediments during storms.
<br />Organic contamination avoided by Sanitary facilities.
<br />(Report dated July 13, 1973.)
<br />Floods
<br />Pipe under the operating area will accommodate the 100 -
<br />year flood.
<br />(Leonard Rice Consulting Water Engineers, Inc.
<br />Report dated April, 1975.)
<br />Item (3)
<br />Topographic shelter minimizes wind action. Johnson -
<br />Wind Erotion and
<br />March dust suppression system on crushers. Detectable
<br />Dust
<br />increase in dust outside quarry only at western edge.
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<br />(Letter from Kenneth W. Carlson, dated March 24, 1975.)
<br />Item (4)
<br />Largely confined to quarry area by topographic shelter.
<br />Airborne Noise,
<br />Small noise increase detectable 1/4 mile west.
<br />Other than
<br />(Letter from Kenneth W. Carlson, dated March 20, 1975.)
<br />Blasting
<br />Item (5)
<br />Quarry blasts monitored since March 1973 by School of
<br />Blasting Noise and
<br />Mines at eight locations. Limiting blasts to 10,450 lbs.
<br />Seismic Disturbance
<br />or less, with not less than six delays, will keep seismic
<br />disturbance below Jefferson County Standards.
<br />(Letter from Kenneth W. Carlson, dated March 20, 1975.)
<br />Fauna
<br />Shrub types are good habitat for deer and rabbits.
<br />Fifty to Sixty acres destroyed. No rare or endangered
<br />species involved.
<br />(Thorne Ecological Institute Report, 1975, P. 23.)
<br />Item (6)
<br />Mt. Falcon Open Space. Limited parts of quarry will be
<br />Scenic, Aesthetic
<br />visible from 460 yards of Falcon Castle trail and one
<br />and Landmark
<br />planned overlook. Most of quarry is visible from some
<br />Values
<br />high points to which there will be no developed trails.
<br />See attached maps.
<br />Denver Mountain Park. Much of the quarry is visible
<br />from a number of places in the adjoining 40 acre unit
<br />of Park.
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<br />73stance Lh Feat.,
<br />RECEIVED
<br />Source of Data: Thorne Ecological Institute
<br />DESIGNED
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<br />Leonard Rice Consulting Water Engineers, Inc
<br />CHECKED He 001761
<br />Denver Albuquerque
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<br />Type /Seq: _ _. _._ -_ ___ ___ _ - ___ r
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<br />73stance Lh Feat.,
<br />RECEIVED
<br />Source of Data: Thorne Ecological Institute
<br />DESIGNED
<br />TRACED_ R IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
<br />Leonard Rice Consulting Water Engineers, Inc
<br />CHECKED He 001761
<br />Denver Albuquerque
<br />Jos NO 19474 JULY 1975 z SHEET 5 OF 6
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